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Electronic properties of Ba/sub 2/Y/sub 1-//sub x/Pr/sub x/Cu/sub 3/O/sub 7-//sub delta/

Journal Article · · Phys. Rev. B: Condens. Matter; (United States)
; ; ; ; ;
Measurement of the Hall coefficient in the Ba/sub 2/Y/sub 1-//sub x/Pr/sub x/Cu/sub 3/O/sub 7-//sub delta/ system has revealed that an increase in Pr concentration reduces the Hall carrier number (1/eR/sub H/) and its strong temperature dependence. The Cu formal valence calculated from the Pr valence, which has been determined to be /similar to/+3.5, shows a weakly decreasing dependence on Pr concentration. T/sub c/ shows a stronger dependence on the Hall carrier number and the Cu-O formal valence than in the oxygen-depleted Ba/sub 2/YCu/sub 3/O/sub 7-//sub delta/ system. The persistence of the chain band explains this observed difference, suggesting that the actual Cu-O valence dependence of the 90-K superconductor is stronger than that of the 40-K superconductor.
Research Organization:
NTT Basic Research Laboratories, 3-9-11 Midori-cho, Musashino-shi Tokyo 180, Japan
OSTI ID:
6910724
Journal Information:
Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 38:4; ISSN PRBMD
Country of Publication:
United States
Language:
English

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Related Subjects

36 MATERIALS SCIENCE
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL STRUCTURE
DIFFRACTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRONIC EQUIPMENT
ELECTRONIC STRUCTURE
ELEMENTS
EQUIPMENT
FLUXMETERS
HALL EFFECT
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
MEASURING INSTRUMENTS
METALS
MICROWAVE EQUIPMENT
OXIDES
OXYGEN COMPOUNDS
PEROVSKITES
PHYSICAL PROPERTIES
POWDERS
PRASEODYMIUM
PRASEODYMIUM COMPOUNDS
PRASEODYMIUM OXIDES
QUANTITY RATIO
RARE EARTH COMPOUNDS
RARE EARTHS
SCATTERING
SQUID DEVICES
SUPERCONDUCTING DEVICES
SUPERCONDUCTIVITY
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
VALENCE
X-RAY DIFFRACTION
YTTRIUM COMPOUNDS
YTTRIUM OXIDES